<span>D. They were opposed to Article 10 that could infringe upon the United States’ right to declare war and expand its territories.</span>
Answer:
Sectionalism is loyalty to one's own region or section of the country, rather than to the country as a whole.
Darwin believed that animals compete for such things as food and water with other species and within their own species and the varieties that are most capable to do this successfully were naturally selected and eventually formed new species and that this mechanism explains the origin of species. Marx believed that social classes compete with each other ie the working class with the bourgeoisie with each trying to fulfil their needs the bourgeoisie for maximum profits and the working class for better wages and working conditions and eventually for the fruits of their labour to be used for socially useful purposes not just to enrich a few at the expense of the many so this is a revolutionary process.
The Truman Doctrine was the event that triggered off the Cold War.
Explanation: Both parties were mutually hostile and did not believe in a possible peaceful coexistence anymore. The Americans and Soviets’ hostility to each other as well as the belief that they could no longer cooperate after the start of the Cold War resulted in the Berlin Blockade. Thus, I can conclude that the Truman Doctrine marked the start of the Cold War.